diff --git a/types.go b/types.go
index 4c5d5f1..bcabf76 100644
--- a/types.go
+++ b/types.go
@@ -6,8 +6,8 @@ import (
 )
 
 type ActionTrace struct {
-    Receiver   eos.Name
-    Contract   eos.AccountName
-	Action     eos.ActionName
-	Data       interface{}
+    Receiver   eos.Name `json:"receiver"`
+    Contract   eos.AccountName `json:"contract"`
+	Action     eos.ActionName `json:"action"`
+	Data       interface{} `json:"data"`
 }